Aim of the study was to investigate the effect of Autochthonous Genetic Type (AGT) and parity order (PO) on milk yield and quality of 77 cows belonging to Agerolese, Bianca Val Padana, Burlina, Cabannina and Valdostana-Castana AGTs. The animals were bred at the Experimental Farm of ConSDABI. The samples for analytical determinations (protein, fat, lactose, minerals, pH and acidity) and somatic cell count were collected monthly for the entire lactation. The data were processed by GLM procedure of SAS with AGT and PO (primiparous, secondiparous, multiparous) as fixed factors. The results showed a significant effect of the AGT on quantity and quality traits of milk: i) Burlina and Agerolese gave respectively, 24 and 25 quintals of milk in 180 days of lactation, 27 and 28 in 210 days and 29 and 30 quintals in 240 days; these productions were significantly higher than Castana (P< 0.05-0.01) which was the least productive; ii) Agerolese showed the highest fat percentage in comparison with the other AGTs (P<0.001) except Cabannina; Bianca Val Padana gave the highest protein percentage (3.50, P<0.01), while the lowest levels were observed in Burlina and Agerolese (3.30 and 3.31). In relation to the PO, the results showed a higher production level in multiparous than primiparous (P<0.001) and secondiparous (P<0.05) at 180 and 210 days of lactation, as expected, but at 240 days of lactation the level of multiparous (29.86 quintals) was significantly higher only than primiparous (P<0.05). Moreover, rising PO, fat percentage increased (from 3.50 to 3.54 to 3.76, P<0.01) whereas protein and lactose percentage decreased (P<0.001). Overall, the results confirm that milk composition varies according to the AGT and, in particular, Burlina and Agerolese differ more markedly from the other AGTs.

Effect of autochtonous genetic type on some quanti-qualitative characteristics of milk / Matassino, D.; Barone, CARMELA MARIA ASSUNTA; Castellano, N.; Gigante, G.; Grasso, M.; Zullo, Antonio. - In: ITALIAN JOURNAL OF ANIMAL SCIENCE. - ISSN 1828-051X. - Vol. 10:S1(2011), pp. 13-13.

Effect of autochtonous genetic type on some quanti-qualitative characteristics of milk

BARONE, CARMELA MARIA ASSUNTA;ZULLO, ANTONIO
2011

Abstract

Aim of the study was to investigate the effect of Autochthonous Genetic Type (AGT) and parity order (PO) on milk yield and quality of 77 cows belonging to Agerolese, Bianca Val Padana, Burlina, Cabannina and Valdostana-Castana AGTs. The animals were bred at the Experimental Farm of ConSDABI. The samples for analytical determinations (protein, fat, lactose, minerals, pH and acidity) and somatic cell count were collected monthly for the entire lactation. The data were processed by GLM procedure of SAS with AGT and PO (primiparous, secondiparous, multiparous) as fixed factors. The results showed a significant effect of the AGT on quantity and quality traits of milk: i) Burlina and Agerolese gave respectively, 24 and 25 quintals of milk in 180 days of lactation, 27 and 28 in 210 days and 29 and 30 quintals in 240 days; these productions were significantly higher than Castana (P< 0.05-0.01) which was the least productive; ii) Agerolese showed the highest fat percentage in comparison with the other AGTs (P<0.001) except Cabannina; Bianca Val Padana gave the highest protein percentage (3.50, P<0.01), while the lowest levels were observed in Burlina and Agerolese (3.30 and 3.31). In relation to the PO, the results showed a higher production level in multiparous than primiparous (P<0.001) and secondiparous (P<0.05) at 180 and 210 days of lactation, as expected, but at 240 days of lactation the level of multiparous (29.86 quintals) was significantly higher only than primiparous (P<0.05). Moreover, rising PO, fat percentage increased (from 3.50 to 3.54 to 3.76, P<0.01) whereas protein and lactose percentage decreased (P<0.001). Overall, the results confirm that milk composition varies according to the AGT and, in particular, Burlina and Agerolese differ more markedly from the other AGTs.
2011
Effect of autochtonous genetic type on some quanti-qualitative characteristics of milk / Matassino, D.; Barone, CARMELA MARIA ASSUNTA; Castellano, N.; Gigante, G.; Grasso, M.; Zullo, Antonio. - In: ITALIAN JOURNAL OF ANIMAL SCIENCE. - ISSN 1828-051X. - Vol. 10:S1(2011), pp. 13-13.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/393576
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