Characteristics of reproductive traits and egg traits of crossbred geese with Graylag ancestry

Abstract

The aim of this study was to evaluate the reproductive traits and physical traits of the eggs of three-breed crosses of geese -White Kołuda (WK) × Slovakian (Sl) × Graylag (Gr) -in terms of the direction of crossing of the parents, and to determine differences in the chemical composition of eggs at the beginning and at the end of the reproductive period. The highest egg production (37 eggs), egg weight (192.4 g) and body weight (males 7491 g, females 6507 g) were characteristic of the crossbreds Sl'GrWK. The eggs of these geese had high density and a high yolk index, as well as a higher Haugh unit value, compared to those of geese from the other groups. The mutually crossed hybrids WKGr´Sl, which had the lowest body weight (males 5804 g, females 5763 g), had the highest egg fertility (77.3%) and hatchability of goslings from set (67.1%) and fertilized eggs (86.9%). In addition, they had the highest Haugh unit value and the greatest number of pores in the shell. The egg yolks of WKGr´Sl crossbreds contained the highest amount of ash at the end of egg production and the highest amount of water in albumen at the beginning of egg production. During the egg production period, water and ash content increased, and the fat content of the egg yolks of the geese decreased regardless of the direction of crossing of the parents. A statistically significant interaction (time × groups) occurred only for percentage of ash in yolk. During the same period, the levels of water, protein and ash increased in the albumen of the eggs, but time × groups interactions were only found for water and ash percentage.

Phenotype correlation of external and incubation traits of Italian White Goose eggs and goslings after hatching

“…Similar and partly poorer results in mongrels obtained by reciprocal interbreeding of several goose breeds were reported by Mazanowski and Chelmonska (2000), Mazanowski and Adamski (2002), Mazanowski and Bernacki (2006). Poorer and significantly lower egg fertility and hatchability of Italian White Goose and two-breed mongrels is reported by Rosinski (2000) and Ðermanović et al (2008).…”

“…Saatci et al (2005) have established in all strains (white, yellow, piebald and black) and Ðermanović et al (2008) in two-breed mongrels, a significantly lower egg mass (under 151 g) than in our study. Depending on the goose mongrel type, Mazanowski and Chelmonska (2000), Mazanowski et al (2002), Mazanowski and Bernacki (2006) reported larger mean egg mass (184 g), but also significantly smaller (148 g) than that reported in our study (168.91 g). Similarly, Razmaitè et al (2014) reported larger (186.69 g -3rd year of breeding), and lower (123.40 g -1st year of breeding) in case of Lithuanian VishtinPs Geese.…”

Effect of egg mass of the white italian goose on fertilisation, loss of weight during the incubation period, hatchability and gosling quality

“…Somewhat higher hatchability percentage (81.5 %) was reported by the same authors (2016a), also of the White Koluda geese, but the fertilisation was insignificantly lower than that reported in our study for all weight groups (88.00 %). Similar and somewhat poorer results in pure breeds and mongrels obtained by the reciprocal interbreeding of various goose races (including the Italian White) was reported by Mitrovic et al (2016), Mazanowski and Chelmonska (2000), Mazanowski and Adamski (2002), Mazanowski and Bernacki (2006). Rosiñski (2000) and Ðermanovic et al (2008) report poorer and considerably lower egg fertilisation rate and gosling hatchability of Italian White Goose and tworace mongrels.…”

“…Saatci et al (2005) have reported in all goose strains (white, yellow, multicolour and black), and Ðermanovic et al (2008) in two race mongrels, a considerably smaller egg mass (under 151 g) of the Italian White goose than that obtained in our research (the average mass of all incubated eggs was 168.91 g). Depending on the goose mongrels, Mazanowski and Chelmonska (2000), Mazanowski et al (2002), Mazanowski and Bernacki (2006) have reported a larger average egg mass (184 g) than the one established in our study (168.91 g), but also considerably smaller (148 g). Similarly, Razmaite et al (2014) Bednarczyk and Rosiñski (1999).…”

“…The following authors have significantly contributed to establishing genetic and non-genetic factors influencing incubation values of goose eggs and gosling quality: Meir and Ar (1991), Bednarczyk and Rosiñski (1999), Mazanowski and Chelmonska (2000), Rosiñski (2000), Mazanowski and Adamski (2002), Bobko and Svetlik (2002), Pakulska. (2003) Saatci et al (2005), as well as: Mazanowski and Bernacki (2006), Meir and Ar (2008), Ðermanovic et al (2008), Rachwal (2008), Rabsztyn et al (2010), Scripnic and Modvala (2010), RazmaitP et al (2014), Kucharska-Gaca et al (2016a), Kucharska-Gaca et al (2016b), Mitrovic et al (2016).…”