期刊
ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES
卷 27, 期 5, 页码 628-634出版社
ASIAN-AUSTRALASIAN ASSOC ANIMAL PRODUCTION SOC
DOI: 10.5713/ajas.2013.13658
关键词
Goat; Black Bengal; Prolificacy; Linear Type Traits; Litter Size; Pregnancy
资金
- National Fund for Basic, Strategic and Frontier Application Research in Agriculture (NFBSFARA) of Indian Council of Agricultural Research (ICAR), New Delhi, India
- Indian Council of Agricultural Research, New Delhi, India under National Fund for Basic, Strategic and Frontier Application Research in Agriculture [NFBSRA/PCN/AP-06/2006-07]
Data on age and body weight at breeding, parity, previous litter size, days open and some descriptive body linear traits from 389 meat-type, prolific Black Bengal goats in Tripura State of India, were collected for 3 and 1/2 years (2007 to 2010) and analyzed using logistic regression model. The objectives of the study were i) to evaluate the effect of age and body weight at breeding, parity, previous litter size and days open on litter size of does; and ii) to investigate if body linear type traits influenced litter size in meat-type, prolific goats. The incidence of 68.39% multiple births with a prolificacy rate of 175.07% was recorded. Higher age (>2.69 year), higher parity order (>2.31), more body weight at breeding (>20.5 kg) and larger previous litter size (>1.65) showed an increase likelihood of multiple litter size when compared to single litter size. There was a strong, positive relationship between litter size and various body linear type traits like neck length (>22.78 cm), body length (>54.86 cm), withers height (>48.85 cm), croup height (>50.67 cm), distance between tuber coxae bones (>11.38 cm) and distance between tuber ischii bones (>4.56 cm) for discriminating the goats bearing multiple fetuses from those bearing a single fetus.
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