Breeding Management System Research Articles

A Study on the Sow Breeding Management System for MSY Improvement based QR-Code

Domestic hog raising industry has been continuously advancing both quantitatively and qualitatively along with economic advancement. However, the current circumstance is that system on domestic sow specification management is insufficient with severe individual differences, and the number of MSY remains to be low compared to that of advanced countries. To solve this issue, systematic specification management technology is needed to decrease the replacement rate of sow and improve the parturition and productivity. Through the proposed QR code based sow specification management system in this paper, it increased the weekly management cycle of sow and designed a system for systematic specification management of sow. When pregnancy succeeded through sow weekly management, 16 weeks of pregnancy period stored in database and current date are added to provide expected delivery date to user. When pregnancy failed, it is added with rut cycle 22 days to display expected date of rut. Through this, it can increase the number of MSY and provide convenience of user.

Development of Quality Control and Breeding Management System of Goats Based on Information and Communication Technology

Development of Quality Control and Breeding Management System of Goats Based on Information and Communication Technology

Development of Quality Control and Breeding Management System of Goats Based on Information and Communication Technology

In the context of the occurrence of infectious diseases in livestock and the increasing demand for animal products in the Asian region, it is necessary to establish information management systems for animal production and the prevention of epidemics. In this study, we propose a next-generation information management system of animal production that utilizes information and communication technology such as RFID, cloud systems, and mobile communication network. Also, we conducted operational test of the information system by using goat as a model for the target animal in order to evaluate the requirements for the dissemination of the system and the remaining issues.

Screening for foal immunodeficiency syndrome

HEREDITARY diseases present two problems for veterinarians and animal owners. First, animal owners become fond of their charges and discovering a genetic flaw is personally upsetting as well as tragic...

Reproductive Performance of the Ardennaise Chicken Breed under Traditional and Modern Breeding Management Systems

Enhancing the use of traditional chicken breeds is necessary to insure long-term conservation of global genetic diversity in poultry. A logical start in this process is to evaluate performance. The objective of this study was to estimate reproductive traits in the Ardennaise chicken breed under traditional and modern management systems. Reproductive performance indicated lighting programs (Natural (NAT) or Artificia l (ART) day length) were highly significant for egg weight, hatchability (p 27 weeks), utmost maximum production peak (56.67%), largest egg number (70.13 eggs/hen) and number of chicks hatched (24.10 chicks/hen) were performed under ART-AL. Heaviest egg weight (53.21g), highest fertility (70.20%), greatest hatchability (55.58%), highest liveability during rearing (95.74%) and lay (100%), lowest early (3.51%) and mid-term embryonic mortality (1.17%) were achieved under NAT-AL. To summarize, most of traits studied in the Ardennaise chicken were moderate when compared to those expected by broiler breeders.

Effect of temperature and water availability during late maturation of the soybean seed on germ and cotyledon isoflavone content and composition

AbstractBACKGROUND:Isoflavone content in soybean seeds is strongly influenced by both environment and genotype. However, little is known about the effect of environment and genotype on isoflavones in germ versus cotyledons. To determine the effect of temperature and soil moisture status during soybean seed development on seed isoflavone concentration and composition, a set of two French and three US cultivars of similar maturity were grown in the greenhouse. At the R6 growth stage, plants were subjected to one of three night/day temperature regimes (13/23°, 18/28° or 23/33 °C) in either optimal or sub‐optimal soil water conditions.RESULTS:In cotyledons, a three‐ to six‐fold variation in total isoflavone content was observed between the high and low temperature treatments, whereas the germ contents had less than a two‐fold variation. Soil water supply had less effect than temperature on the isoflavone contents and compositions. In both seed parts, the isoflavone concentrations were highly dependent on the cultivar.CONCLUSION:These results show that isoflavone content and composition in cotyledon and germ are unrelated and it should be possible to independently manipulate these seed traits through plant breeding and crop management systems. Copyright © 2007 Society of Chemical Industry

Management of photoperiod to control caprine reproduction in the subtropics

Reproductive seasonality is observed in some breeds originating from or adapted to subtropical latitudes. In ‘photoperiodic flexible breeds’, such as Australian cashmere goats, the annual breeding season can be manipulated through nutrition, whereas in ‘photoperiodic rigid breeds’, such as Creole goats from subtropical Mexico, sexual activity can be controlled by altering the photoperiod. In males from the latter breed, artificial long days, whether or not accompanied by the administration of melatonin, stimulate sexual activity during the non-breeding season. These treated males are able to induce the sexual activity of anoestrous females through the male effect under intensive or extensive conditions. Photoperiodic treatments and the male effect can be easily integrated into different breeding management systems in subtropical latitudes.

Effect of initial breeding weight and management system using a high-producing sow genotype on resulting reproductive performance over three parities.

A study was conducted with sows of a high-producing genotype to evaluate their reproductive performance using three breeding weights over a three-parity period in two management systems. A total of 114 F1 gilts (Landrace x Yorkshire) were used in a split-plot, randomized, complete block experiment conducted as a 3 x 2 factorial arrangement of treatments in two replicates. Three gilt breeding weights of 120, 135, and 150 kg were achieved by feeding 1.8, 2.3, or 3.2 kg/d of a .73% lysine corn-soybean meal (C-SBM) diet, respectively, from 5 to 8 mo of age. Two locations, each with different management systems, were considered the main plot and consisted of 1) outside, concrete-floored gestation lots and indoor farrowing pens or 2) indoor gestation pens and farrowing crates. All sows were fed 1.8 (Parity 1) or 2.1 (Parity 2 and 3) kg/d of a .73% lysine C-SBM diet during the breeding and gestation periods, whereas a .82% lysine C-SBM diet with 5% added fat was available ad libitum during lactation. All sows lost weight during the first lactation; larger weight losses occurred as breeding weight increased (P < .01). During the second and third lactations the 135- and 150-kg sow breeding groups had less lactation weight change, whereas the 120-kg group lost more weight, resulting in a breeding weight x parity interaction (P < .01). The 120-kg breeding weight group consumed less feed (P < .05) for the three lactation periods than did the heavier weight groups. Initial breeding weight had no effect on number of pigs born (total, live) or pig and litter weights at birth. Pig mortality increased with increasing breeding weight (P < .01) and parity (P < .05), a response that was exacerbated when sows farrowed in pens vs crates. Postweaning breeding intervals and sow removal from the experiment were not significantly affected by initial breeding weight, but a numerically higher percentage of sows in the 120-kg group were anestrous or failed to conceive than the percentage of such sows in the heavier weight groups. These data suggest that an initial breeding weight of approximately 135 kg at 8 mo of age may be best when sows farrow in crates, whereas when sows farrow in pens a lower breeding weight may be more desirable.

A note on seasonal changes in litter size of Finn × Awassi ewes

ABSTRACTThe twinning rate of Finn × Awassi ewes in a breeding management system which included three breeding periods a year, namely, June, September and December-January, was studied in animals mated at their natural or induced oestrus.A similar number of lambs per ewe lambing was obtained from the ewes mated either at the induced oestrus in June or September, or at their natural oestrus in December. A significant decrease was found in the twinning rate of the ewes mated in January after hormone treatment. The conception rate was highest in the ewes mated in December-January.

Length of Breeding Season for Eight Breed Groups of Sheep in Wisconsin

The breeding season was studied in eight breed groups: Texas Rambouillets, Montana Rambouillets, Wisconsin Hampshires, Beltsville Hampshires, Suffolks, Polled Dorsets, Targhees and Columbias maintained in confinement in southern Wisconsin. Each breed group consisted of 27 mature ewes allocated randomly into two lots. The ewes were checked daily for estrus for a period of 1 year. There were well defined seasonal trends (P<.01) in the incidence of estrus and some indication (P<.08) of differences among breeds. All breeds showed relatively low incidences of estrus during May, June, July and August. Based on these data for the given breed groups, breeding management systems for lambing three times in 2 years do not appear to be feasible under Wisconsin conditions. Twice-per-year breeding systems using the combinations of March-September, April-October or May-November may have some merit, but more experimental information is needed on length of postpartum anestrous interval and lambing rates at different times of the year.