Fertility and birth weights of goats in a subtropical environment

Epstein, H.; Herz, A. J.

doi:10.1017/s002185960006086x

Cited by 33 publications

(14 citation statements)

References 3 publications

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“…So, reproductive performance of Black Bengal goats was higher than crossbred goats and statistically significant (P<0.05). This result is agreed with Epstein & Hertz (1964) which depends on photoperiod, kidding season and nutritional status. Post partum heat period: The average post partum heat period of Black Bengal and crossbred goats were 38.75±10.5 and 121.75±15 days respectively and differences are highly significant (P<0.01).…”

Section: Methodssupporting

confidence: 90%

A comparative study on reproductive performance and productivity of the Black Bengal and Crossbred goat at Atrai, Bangladesh

Hassan

Mahmud²,

Islam³

et al. 1970

Univ. j. zool. Rajshahi Univ.

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: The present investigation was carried out to detect the status of different productive and reproductive parameters of Black Bengal and Crossbred goats at Bandaikhara village under Atrai Upazilla of Naogaon district during the period of September to December/2005. The average age at first sign of heat of Black Bengal goats was better than that of Crossbred goats. In Black Bengal goat the average age at first kidding was 360.5±10 days, whereas, in crossbred goats it was 411.5±15.5 day. Significantly (P<0.01) lower the post partum heat period in Black Bengal goat than the crossbred goat. The average kidding interval in Black Bengal and Crossbred goats were 179±20 and 270±22 days respectively and differences are statistically significant (P<0.01). The usual numbers of kids at one time in Black Bengal goats vary from single to quadruplet. On the other hand, litter size of crossbred goat was single or twin. The average birth weight of Black Bengal goat was lower than Crossbred goats, which are statistically significant (P<0.05). The average body weight gain after 365 days is better in Crossbred than Black Bengal goats and statistically significant (P<0.01). The average milk yield in Crossbred goat was 1.05 liter/day, whereas, in Black Bengal goat, it produces milk that only nourished its kids. It was concluded that the reproductive performance like early maturity, larger litter size, shorter postpartum period, minimum kidding interval are better in Black Bengal goat. On the other hand productive performance like higher birth weight, maximum body weight gain, high milk yield, longer lactation length are suitable in crossbred goat.

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Section: Methodssupporting

confidence: 90%

A comparative study on reproductive performance and productivity of the Black Bengal and Crossbred goat at Atrai, Bangladesh

Hassan

Mahmud²,

Islam³

et al. 1970

Univ. j. zool. Rajshahi Univ.

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“…Mean LS of Matou goats was similarly to that of these domestic breeds and greater than that of exotic breeds such as American Alpine Dairy, French Alpine, Nubian, Pygmy, Toggenburg, Saanen (Mascarenhas et al 1995;Amoah et al 1996), West African Dwarf (Ebozoje and Ikeobi 1998), Mexico Dairy (Galina et al 1995), and Mexico Alpine (Siva et al 1998). In common with studies with dairy breeds in temperate (Crepaldi et al 1999), arid (Epstein and Herz 1964;Erasmus and Fourie 1985) and hot arid (Mellado et al 2006) environments, multiparous goats were more likely to have higher number of kids per birth. These facts indicate that the Matou goat is one of prolific breeds in the world.…”

Section: Litter Size and Survival Ratesupporting

confidence: 55%

Reproductive performance of Matou goat under sub-tropical monsoonal climate of Central China

Moaeen‐ud‐Din

Yang

Chen³

et al. 2007

Trop Anim Health Prod

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The aim of the current study was to estimate reproductive parameters of Matou goat to evaluate a meat breed. Data on 2,560 kids from 1,197 kidding records of 638 does and on puberty of 546 females kids were collected from farmer household herds of Matou goats in six counties of Shiye city under Hubei Province in China. Statistical analyses on puberty, estrus, gestation length (GL), litter size (LS) and survival rate (SR) of kids at puberty were performed with software Genstat 5 (Release 3.1) by using descriptive statistics and regression models. The results showed that age at puberty of female kids was 108.4+/-19.1 days while estrus duration and cycle averaged 58.6+/-15.9 hours and 19.7+/-1.5 days respectively. Gestation length (GL) and litter size (LS) averaged 150+/-7.4 days and 2.14+/-0.9 respectively with 90.8% of survival rate (SR) of kids. GL was unassociated with parity, but delayed as LS increased. SR of kids at birth differed remarkably among parity 1 to 5, decreased significantly at parity 6 to 7, and then increased at 8th parity. In Matou goat over all twinning and triplet percentage was 45.4 percent and 16.3 percent whereas percentage of single birth was 27.4 percent. As twins and triplets birth rate is considerably higher in Matou goat so, this breed can be recommended to other parts of China and the world having similar climatic conditions.

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“…Amble et al (1964), working with Beetal goats, observed that male kids were significantly heavier at birth than the females and that this effect was independent of the sex combination in twin and triplet litters. Similar sex difference has been reported by Epstein & Herz (1964) among eight breeds of goats in Israel.…”

Section: Resultssupporting

confidence: 86%

Genetic and environmental causes of variation in birth weight of Black Bengal goats

Moulick¹,

Syrstad²

1970

J. Agric. Sci.

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An investigation on the different environmental and genetic causes of variation in the birth weight of Black Bengal goats was conducted at the Central Livestock Research-cum-Breeding Station, Haringhata, India. The data consisted of 1375 birth weight records of kids from 284 does and 20 bucks during the period from 1955 to 1961. The goats were maintained under standard farm management throughout the period.Year had significant effect on birth weight, while the effect of season was insignificant. The interaction was, however, significant. Male kids were significantly heavier at birth than the females. Age of dam and litter size also caused significant variation in birth weight of kids.From paternal half-sib analysis the heritability of birth weight was estimated to be 0-01. Full sib and maternal half sib analyses estimated the maternal environment common to litter mates to account for 60 % of the variance, out of which 25 % were due to permanent differences between dams. The remaining 39 % were attributed to individual environment, including most of the non-additive genetic variance. The heritability of maternal environment was estimated to be 0-2.The partial correlation coefficient between birth weight of kids and post-kidding body weight of their dam, independent of litter size and age of dam, was 0-175. Thus, body size of dam, as indicated by post kidding body weight, did not reveal much information about maternal environment.

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Fertility and birth weights of goats in a subtropical environment

Cited by 33 publications

References 3 publications

A comparative study on reproductive performance and productivity of the Black Bengal and Crossbred goat at Atrai, Bangladesh

A comparative study on reproductive performance and productivity of the Black Bengal and Crossbred goat at Atrai, Bangladesh

Reproductive performance of Matou goat under sub-tropical monsoonal climate of Central China

Genetic and environmental causes of variation in birth weight of Black Bengal goats

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