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Kerala Veterinary and Animal Science University, Mannuthy, Thrissur, INDIA

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FACTORS AFFECTING THE DURATION OFF~ IN HAMPSHIRE, LARGE BLACK AND CR05SBIED'PIG

D.R. Nath, R.N. GoswamiandD. Deka

Affiliations

¹Department of Animal ProductIon and Management, College of Veterinary Science, Assam Agricultural University, Khanapara, Guwahatl - 781 022, india

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Cite article:- Nath D.R., Deka GoswamiandD. R.N. (2025). FACTORS AFFECTING THE DURATION OFF~ IN HAMPSHIRE, LARGE BLACK AND CR05SBIED'PIG. Indian Journal of Animal Research. 38(2): 141 - 143. doi: .

ABSTRACT

Records pertaining to 51 farrowing of Hampshire, Large Black and Crossbred (Hampshire × Indigenous) pigs maintained at the ‘30 Sow Teaching Unit’, College of Veterinary Science, Assam Agricultural University, Khanapara, Guwahati were utilized. The animals were reared under intensive system of management. The least-squares averages for duration of farrowing in Hampshire, Large Black and Crossbred were respectively, 4.54±0.01, 4.72±0.55 and 4.15±0.51 and the populatton average was 4.47±0.41 hours. The effects of genetic group, litter size and litter weight at birth, parity of dam, season of farrowing and farrowing time in a day were all found to be non-significant. Regression of duration of farrowing on gestation period was negative, but it was not significant there was a definite trend of increase in duration of farrowing with increase in litter size at birth, litter weight at birth and parity. Similar study, involving larger nuumber of records was envisaged.

KEYWORDS

REFERENCES

Calvaleanti, S.DE S. et aJ. (1981). Arqulvos da Escola de Veterlnarlada Unlversldade federal de Minas gerais., 33(3): 477-481 (Anlm. Bred. Abstr. 50(11): 6376}.
English, P.R. et a/. (1977). The sow : improving her efficiency. Farming Press Ltd., Suffolk (UK).
Fahmy, M.H. and Friend, OW. (1981). Canadian J. Anlm. Sci., 61: 17-22.
Friend, OW. et al. (1962). Canadian J. Camp. Med. Vet., 26: 127-130.
Harvey, W.R. (1975). Least squares analysis of data with unequal subclass numbers. ARS, 20. USDA, Beltsville, Maryland, USA.
Kaczmarczyk, J. et a/. (1987). Zootechnika., 25: 57-75 (Anim. Breed. Abstr. 58(1): 245).
Klocek, C. et aJ. (1992). Zuchtungskunde., 64(2):121-128. (Anim.Breed. Abstr. 60(9): 5890}.

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